Here you go, I got this from this list quite a while ago:
Measure your wheel/tire across the hub. This gives the tire diameter (D).
pi*D = circumference in inches (C) = 360 degrees
.06 inches * 360 degrees / C = toe in degrees
You can get a decent approximation for D without measuring it by using the
tire height value posted by the manufacturer.
Readings in: Inchs Degrees Millimeters
1/32 .03 .79
1/16 .06 1.6
3/32 .09 2.4
1/8 .13 3.2
5/32 .16 4.0
3/16 .19 4.8
7/32 .22 5.6
1/4 .25 6.4
Note these would be the same for toe-in as well as toe-out, only toe-out
would read as a negative figure.
> The printout for my last wheel alignment showed that toe
> was measured in inches, but the factory manual shows it in
> degrees.
>
> How do I convert from one to the other?
>
> Thanks,
> Pete
Jeff Cawthorne
San Diego
89 Corvette
94 Corvette
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